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Serum progesterone (P) levels (ug/L) in normal rats (n = 5), PCO induced rats (n = 5) and treated rats with metformin and pioglitazone (n = 5). Induction of PCO caused an increasing the P level, while metformin and pioglitazone attenuated over secretion of T. Data were presented as the mean ± SD. Different letters denote differences among groups at P < 0.05.
